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The Full-Time Developer ‘Curse’

Some time ago I wrote an article with my advice to (junior) developers about their career.  One of the things I explained was that by the word “young” I meant all developer who feel young so it doesn’t matter how many years of experience you’re carrying on your back.  You’re still “young”! A few days ago, I came back from two-weeks of vacations and ...

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This is Stuff: jUnit: Dynamic Tests Generation

Dynamic tests generation is useful when you need to run the same set of tests on many different input values or configurations. It can be achieved either using parametrized tests or using theories. Theories are valuable when you have a bunch of data to be used as parameters and want to run tests on all their combinations. You get less ...

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Java 8 : Functional VS Traditional

The business logic is the same : Given a String expression composed of visits / time like : “1/24h,1..3/3h,5/*” Then the result should be the following list of Strings: “1/24h”, “1/3h”,”2/3h”,”3/3h”, “5/1h”,”5/2h”,”5/3h”,”5/4h”,”5/5h”,until ,”24/1h” So, 2 things need to be solved, the dots and the stars for the visits and for the time. I will use Java 8 , but  I’ll ...

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Why Testers Are Losing The ISO 29119 Battle

The ISO 29119 is making waves in the testing communities, regarding its content and necessity. Its focus on test planning and documentation gets modern testers to ask why. I’ve worked in an ISO certified company, so maybe I can shed light from my past experience.           ISO standards are written by committees, which are made of ...

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Clustered Idempotent Consumer Pattern with Infinispan

I’ve created a small project that shows how to use JBoss Infinispan with Apache Camel and the Idempotent Consumer Pattern to guarantee a message will not be processed twice in a clustered environment. Imagine you have an application that has to scale out easily by deploying it on multiple containers. But the application has to process each unique request only ...

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Unit Testing – Cost vs. Benefit

I have been a big fan of unit testing for a very long time; my blog is ridden with posts about it. If I look at how automated unit testing has progressed in my projects over the last decade I am noticing that the inclination to do unit testing is just not there. Recently, I came across this Podcast series between Martin Fowler, Kent ...

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Pizza problem – builder vs decorator

Problem Statement We need to build the software for a pizza company who wants to prepare different types of pizzas, e.g Chicken Pizza, Flat Bread, Pepperoni Pizza with Extra Cheese, put add on toppings on it. Lets try to see which design pattern suits this problem statement and under what scenario. Traditionally, for pizza problem, builder pattern is most commonly ...

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Resolving the dual ItemClick conundrum for the Android Gallery View

Yes, the Gallery View is deprecated, however currently there really isn’t an out of the box solution to what the gallery view provides, which is a center locked horizontal scrolling list of items. The Twoway-view project has some potential in addressing this need, but it needs time to mature a bit. There are many issues with the Gallery view, but ...

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15 Java Socket Programming, Networking Interview Questions and Answers

Networking and Socket Programming is one of the most important areas of Java programming language, especially for those programmers, who are working in client/server based applications. Knowledge of important protocols e.g. TCP and UDP in detail is very important, especially if you are, for example, in the business of writing high frequency trading applications, which communicate via FIX Protocol or ...

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